Hazardous Marine Life Quiz - Dive Safety Quizzes

Which statement is TRUE about bristle worms?

A. They can cause injury with bristle penetration.B. An injury inflicted by a bristle worm may cause severe reactions, but typically result in mild to moderate burning, itching and numbing sensations.C. They can often be found under rocks or in corals.D. All of the above.

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Which statement is FALSE about lionfish?

A. Lionfish have longer spines than other scorpionfish in the family.B. Lionfish can cause ciguatera poisoning.C. Lionfish can shoot their spines.D. Lionfish envenomations may cause significant pain but are rarely fatal.

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Identify the hazardous marine life depicted below.

A. Red Sea Fire UrchinB. AnemoneC. Fire coralD. Crown of Thorns

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Which statement is FALSE about Glaucus atlanticus?

A. It is a free-floating nudibranch.B. It is approximately 3 centimeters in size.C. It consumes Portugese Man-of-War (**Physalia physalis**) and uses its prey's toxin as a defense mechanism.D. It is mostly pelagic, but can be found on tropical Atlantic shores.E. It may burrow into your wetsuit and cause seabather's eruption.

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Which statement is TRUE about Portugese Man-of-War (Physalia physalis) ?

A. The Portugese Man-of-War is a jellyfish.B. The Portugese Man-of-War looks like a jellyfish, but is actually a siphonophore, which is a colonial organism comprised of zooids.

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Which statement is TRUE about sea snakes?

A. Sea snakes are predominately found in the Atlantic Ocean.B. Sea snakes do not breathe air.C. Sea snakes do not always inject venom when they bite.D. Sea snake venom is not toxic.

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What kind of hazardous marine life is depicted in the image below?

A. Lionfish (**Pterois spp.**)B. Stonefish (**Synaceia spp.**)C. Scorpionfish (**Scorpaenopsis spp.**)D. There is no marine life in this image.

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What do a porcupinefish (Diodon nicthemerus), blue-ringed octopus (Hapalochlaena spp.) and a sunfish (Mola mola) have in common?

A. Physalia toxinB. TetrodotoxinC. MycotoxinD. Scombroid toxin

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Titan triggerfish (Balistoides viridescens), from the Indo-Pacific, can inflect severe bite wound. When are they considered most aggressive?

A. When they are young.B. During courtship and spawning activities.C. When building and guarding an egg nest.D. All the above.

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Which statement is TRUE about sea urchins?

A. All sea urchins are venomous.B. Not all sea urchins are venomous.

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Where might you encounter a blue-ringed octopus?

A. Deep Caribbean coral reefsB. Shallow Indo-Pacific tide poolsC. Channels off of northwestern North AmericaD. Sinkholes in South Africa

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Which statement is FALSE about box jellyfish (Chironex spp.)?

A. Box jellyfish are most often found in quiet, protected and shallow areas.B. Death may result within minutes of envenomation.C. Box jellyfish have eyes and may be able to circumvent objects.D. Box jellyfish are restricted to cold waters.

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Which species of coral shown below is hazardous?

A. 1B. 2C. 3D. 4E. All of the above.

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